The human army was like a levee while the elven army was like the waters of an ocean. The ocean wanted to overflow and flood the area behind the levee, but the levee stood its ground and didn't budge an inch.
Again and again, the waters of the ocean crashed against the levee. But again and again, it was beaten back.
Not that the levee wasn't taking damage. It was as the ocean eroded a little of it every time its waters crashed against the levee. But the levee remained largely intact.
So it was clear that the human army had the upper hand. This is because of their advanced communication system and superior coordination between the living and metal assets on the battlefields.
This battle is vastly different from the first battle that the humans had against the elves. During that battle, the humans were dropped randomly onto the battlefield.
Some of them didn't manage to make it to the battlefield, while the ones that did were largely on their own. At that time, the human soldiers were struggling against the defenders to create a foothold in a foreign world.
The elven army had the advantage of the environment. They were familiar with their world and were surrounded by trees that they could easily turn into soldiers and use to replenish their firepower.
But things are very different this time. The human soldiers are not scattered everywhere fighting for their lives. They are entrenched and in formation.
Their formation is in a squad of ten thousand, with each squad containing a leader that is an X-rank and subordinate leaders of every class below that level.
Each squad can handle enemies of any level as they had soldiers of every rank. They also engaged in a division of labor in which X-rank only fought with X-rank enemies and S-rank soldiers dealt with other S-rank enemies.
Their mark would identify the power of an enemy and direct the soldiers to deal with specific enemies instead of fighting haphazardly.
This way, an X-rank soldier wouldn't be preoccupied fighting an SS-rank enemy while an X-rank enemy decimates the weaker troops.
And when a soldier is wounded, he or she is quickly saved, pulled back, and replaced with soldiers who are behind them waiting for their chance to fight.
This level of coordination was achieved thanks to the combination of surveillance of the marks on every soldier, the real-time data and images from the satellites above, combat bots, and drones.
Within Command headquarters in the mothership, commanders were poring over data screens and working together with advanced artificial intelligence to direct the troops and shift firepower to areas where they were needed on the battlefield.
Within the center of the large room used as their headquarters is a large color coded map that shows the summary of the battlefield and indicates areas of concern by flashing a red light in those areas.
There are many other screens flashing different lights of their own and many humans rushing about observing the data before them and making changes to the troop deployment.
The elven army doesn't have such a sophisticated command center. They don't even have a command center and communication between the commanders is scanty at best.
Their commanders, who are the royal elves, simply make decisions based on what they can see around them on the battlefield.
This is just the difference in coordination. There is also the different environment.
The environment is cold, which has slowed down the enemy and weakened them. The ice had also killed the trees and frozen the ground so new trees can't grow. This ensures that the elves won't be able to raise treants to support them in battle.
Meanwhile, the human army can always replenish their manpower and firepower by producing more drones and combat bots from their base behind them. So over time, they will be able to maintain their firepower.
What's more, drones and bots don't get tired. They can also be sacrificed, and their remains can be repaired or used to forge new bits that will be sent back into battle.
Lastly is the fact that the elven army can't overwhelm their enemy with their superior numbers. So even if they could grow trees there and then and turn them into soldiers, it wouldn't be as impactful as it should be because only a limited number of their soldiers can confront the human soldiers at a time.
The elven army is truly at a disadvantage despite outnumbering the human army almost a hundred to one. The only ones who knew this were the demigods fighting above in the firmament and the high command of the Yggdrasil civilization army.
The soldiers fighting on the ground and in the air didn't know this. They only knew to obey orders and fight with their lives on the line.
Kelvin was largely insignificant on the battlefield, but as time passed, his presence became noted. It is mostly because he doesn't tire.
The fight lasted for days. During that time, many soldiers were forced to withdraw to rest or heal. They were replaced by the soldiers behind them, so a sort of rotation was formed.
But he didn't request for rest from Command. He stayed on the front lines for the whole of the first day of fighting. His resilience continued to the second day and to the third.
On the fifth day of fighting, he was still there on the front lines fighting. There was the roar of gunshots and rail guns and missiles exploding all around him. Soldiers were replaced, but he remained standing.
He was injured several times. There was even a time a stray attack from some powerful enemy shattered his head and took half of his head away. He was able to heal his injuries and return to fighting.
On the battlefield, either someone can't injure him at all because of his diamond physique and Juggernaut's Armament, or they will injure him severely and nearly kill him if he doesn't run for his life.